Die Grinder, Voltage 18V DC, Max. Speed 25,000 RPM, Grinder Orientation Straight, Switch Type Paddle, Battery Capacity 5.2Ah, Brushless Motor No, Cordless Tool Kit Contents (1) Bare Tool, Accessory Free Tool Change No, Collet Guard Type 6.35 mm, Collet Size 1 11/16 in, Lock-Off Switch Yes, Lock-On Switch No, Brake Type None, Anti-Kickback Clutch Type Electronic, Anti-Restart Technology Yes, Vibration Level 1.1 m/sq sec, 1.5 m/sq sec